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alekssr [168]
3 years ago
6

Could anybody answer this

Mathematics
1 answer:
Alexandra [31]3 years ago
5 0

Try this solution:

1. if to transform the given equation into the standard form:

x²+y²-4x+6y-3=0;

(x²-4x+4)+(y²+6y+9)-16=0;

(x-2)²+(y+3)²=4²

2. Using the standard form it is possible to find the coordinates of the centre of given circle: x=2; y= -3


answer: b) - (2;-3)

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Help picture below problem 12
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Answer:

80 degrees

Step-by-step explanation:

This is a really confusing question with a really confusing answer. Basically, the 80 degree angle that they give us (Angle 2, I think) is equivalent to Angle 4, Angle 5, and Angle 3. I know that might seem really weird, but if you look closely at all the angles I just named, they all look like they are about the same measure. They are all slightly less than a right angle (90 degrees) and none of them are obtuse angles- they're all acute. Basically, the answer is 80.

And if I'm wrong, I am so sorry! I still sometimes get confused on these type of questions. Well, I hope its right and I hope that if it is, it was helpful! Have a lovely day!! :)

5 0
2 years ago
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Step-by-step explanation:

each lap is 1 3/8 times that by 3

3/8 * 3 = 1.125

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so would be 4.125

7 0
2 years ago
Read 2 more answers
A survey of a group’s viewing habits over the last year revealed the following
Tom [10]

Answer:

0.52

Step-by-step explanation:

The computation of the percentage of the group in which none of the three sports watched is shown below:

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= 0.28 + 0.29 + 0.19 - 0.14 - 0.12 - 0.18 + 0.08

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Now the percentage is

= 1 - 0.48

= 0.52

7 0
3 years ago
What is z over 3 = 20
atroni [7]

Answer:

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Step-by-step explanation:

z/3 = 20. (Multiply both sides by 3 to isolate ‘z’)

20 • 3 = 60

7 0
3 years ago
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Answer:

23 gallons of water

Step-by-step explanation:

People use water to​ cook, clean, and drink every day. An estimate of 33.9​% of the water used each day is for cooking. If a family uses 67.8 gallons of water a day for cooking​, how many gallons do they use every​ day?

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33.9 % × 67.8 gallons of water

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= 22.9842 gallons of water

Approximately = 23 gallons of water

Therefore, 23 gallons of water are used everyday for cooking

5 0
2 years ago
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